Re: F23 System Wide Change: Default Local DNS Resolver

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>>>>> "RSB" == Ryan S Brown <ryansb@xxxxxxxxxx> writes:

RSB> I disagree; for server & cloud deployments it doesn't make sense to
RSB> duplicate a DNS server on *every* host, and if you care about
RSB> DNSSEC you likely already run a trusted resolver.

I disagree generally in the case of server deployments.

Having a local caching resolver is pretty much essential, even though we
all know it's just a workaround for glibc.

Basically, if you have properly functioning DNS on multiple local
servers but not having anything fancier like heartbeat-based IP handoff
or a load balancing appliance or something, and the first resolver in
resolv.conf goes offline, your hosts are screwed.  glibc's resolver code
is simply horrible.  This is completely exclusive of DNSSEC issues.

Of course, most folks who have enough infrastructure to have their own
DNS servers and such can easily figure out how to configure a local
resolver if need be, so what's in the default setup really makes no
difference.  And for the home user who might want to grab the server
spin/product/whatever-we're-calling-it-this-week, well, I'd think they'd
want the local resolver.

What really concerns me is what happens with split DNS.  I assume I'll
just need to configure the local resolvers to talk only to my resolvers,
but this would really need to be documented.

 - J<
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